Assembled landfill leachate treatment device

Abstract

An assembled landfill leachate treatment device comprises at least one movable first box body, at least one movable second box body, at least one movable third box body, at least one adjusting tank arranged in the first box body, at least one grating well, at least one anaerobic tank, at least one aerobic tank, at least one MBR (membrane biological reaction) tank and at least one fan device, the first box body, the second box body and the third box body are connected into a whole in a stacked manner, so that on one hand, the occupied area of the treatment device is effectively reduced, the space above the ground is effectively utilized, and on the other hand, a user can carry out treatment on landfill leachate according to needs; a user selects to directly stack the upper side of the first box body or the second box body or the third box body, so that the number of equipment is increased, the effect of improving the treatment capacity of the equipment is achieved, the occupied area of the treatment device is reduced while the treatment capacity of the treatment device is improved, and the effect of achieving two purposes at one stroke is achieved.

Description

Technical Field

[0001] The utility model relates to the field of garbage leachate treatment, in particular to an assembled garbage leachate treatment device. Background Art

[0002] Leachate refers to a high-concentration organic wastewater that comes from the moisture contained in the garbage itself in the landfill, the rain and snow water that enters the landfill, and other moisture, minus the saturated water holding capacity of the garbage and covering soil layers, and passes through the garbage layer and covering soil layer.

[0003] MBR membrane bioreactor is a new water treatment technology that combines high-efficiency membrane separation technology with activated sludge method. The application of hollow fiber membrane replaces the secondary sedimentation tank in the activated sludge method to perform solid-liquid separation, effectively achieving the purpose of mud-water separation. By making full use of the efficient interception effect of the membrane, nitrifying bacteria can be effectively intercepted and completely retained in the bioreactor, so that the nitrification reaction can proceed smoothly, ammonia nitrogen can be effectively removed, and the loss of sludge can be avoided. It can also intercept macromolecular organic matter that is difficult to degrade for a while, prolong its residence time in the reactor, and maximize its decomposition. After applying MBR technology, the removal rate of major pollutants can reach: COD ≥ 93%, SS = 100%. The suspended solids and turbidity of the produced water are almost zero, and the treated water quality is good and stable.

[0004] A Chinese utility model patent (application number: 201120150427.1, publication number: CN202080961U) discloses a landfill leachate deep treatment equipment, including a pipeline mixer, a security filter, a high-pressure pump, a circulation pump, a nanofiltration system, and a concentrated liquid reservoir, characterized in that the circulation pump includes a first-stage circulation pump and a second-stage circulation pump, the nanofiltration system includes a first-stage nanofiltration membrane filter and a second-stage nanofiltration membrane filter, the security filter, the high-pressure pump, the first-stage circulation pump, the first-stage nanofiltration membrane filter, the second-stage circulation pump, the second-stage nanofiltration membrane filter and the concentrated liquid reservoir are connected in sequence through pipelines and valves, and a concentrated water return pipeline is also included between the outlet of the first-stage nanofiltration membrane filter and the inlet of the first-stage nanofiltration membrane filter, and two concentrated water return pipelines are also included between the outlet of the second-stage nanofiltration membrane filter and the inlet of the second-stage circulation pump. However, there are still the following shortcomings in actual use: the number of landfill leachate treatment equipment is large and the area occupied is large, and the treatment device can only be used at a fixed position after construction. Utility Model Content

[0005] The utility model provides an assembled garbage leachate treatment device, the main purpose of which is to overcome the defect that the traditional garbage leachate treatment device can only be fixed and used at the original position after construction.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An assembled landfill leachate treatment device comprises at least one movable first box, at least one movable second box disposed on one side of the first box, at least one movable third box disposed on one side of the second box, at least one regulating tank disposed in the first box for regulating water quality and quantity, at least one grille well disposed in the first box and connected to the regulating tank for pre-filtration, at least one anaerobic tank disposed in the second box for anaerobic treatment, at least one aerobic tank disposed in the second box and connected to the anaerobic tank for aerobic treatment, at least one MBR membrane bioreactor tank disposed in the third box for mixed water separation treatment, and at least one fan device for providing air, wherein the fan device provides air to the regulating tank, the aerobic tank, and the MBR membrane bioreactor tank respectively, the grille well, the regulating tank, the anaerobic tank, the aerobic tank, and the MBR membrane bioreactor tank are connected in sequence, and the first box, the second box, and the third box are connected to each other in a stacked manner.

[0008] Furthermore, the first box, the second box and the third box are connected as a whole in a stacked manner, the third box is detachably stacked on the upper side of the second box, and the second box is detachably stacked on the first box.

[0009] Furthermore, one of the second boxes is arranged on the upper side of one of the first boxes, one of the third boxes is arranged on the left or right side of the first box, and another of the second boxes is arranged on the upper side of the third box. The first box, the second box and the third box are all connected by an infusion pipeline.

[0010] Furthermore, it also includes at least one first infusion pump arranged in the first box and located in the regulating tank, and a first infusion tube for connecting the regulating tank and the anaerobic tank, the liquid inlet end of the first infusion pump is connected to the liquid outlet end of the regulating tank through the first infusion tube, and the liquid outlet end of the first infusion pump is connected to the liquid inlet end of the anaerobic tank through the first infusion tube.

[0011] Furthermore, the fan device includes at least one first fan for providing air, at least one first air duct provided on the first fan, and at least one second air duct provided on the first fan, the first air duct extends below the liquid level of the regulating tank, so that the first fan draws air into the regulating tank for aeration, and the second air duct extends below the liquid level of the aerobic tank, so that the first fan draws air into the aerobic tank for aeration.

[0012] Furthermore, the fan device also includes at least one second fan arranged in the third box for providing air and at least one third air duct arranged on the second fan, and the third air duct is connected to the air inlet end of the MBR membrane biological reactor tank.

[0013] Furthermore, it also includes a detection tank arranged in the third box body, the liquid inlet end of the detection tank is connected to the liquid outlet end of the MBR membrane biological reactor tank, and the liquid outlet end of the detection tank is connected to the municipal pipe network.

[0014] Furthermore, it also includes at least one acid washing device disposed in the third box, and the acid washing device performs acid washing on the liquid in the MBR membrane biological reactor tank.

[0015] Furthermore, it also includes at least one mixed liquid reflux pump disposed in the second housing, and the mixed liquid reflux pump refluxes the liquid in the aerobic tank to the regulating tank.

[0016] Compared with the prior art, the beneficial effects produced by the utility model are:

[0017] The utility model has a simple structure and strong practicality. By arranging the first box body, the second box body and the third box body to be connected together in a stacked manner, on the one hand, the footprint of the treatment device is effectively reduced and the space above the ground is effectively utilized. On the other hand, according to the required treatment amount of leachate, the user can choose to directly stack and install another first box body, another second box body or another third box on the upper side of the first box body, the second box body or the third box body, thereby increasing the number of devices and achieving the effect of increasing the processing capacity of the equipment. The processing capacity of the treatment device is increased while the footprint of the treatment device is reduced, achieving the effect of killing two birds with one stone.

[0018] In the utility model, by arranging the regulating tank, anaerobic tank, aerobic tank and MBR membrane biological reactor tank in the first box body, the second box body and the third box body respectively, the transportation and movement of the equipment is convenient, so that after completing the treatment work, the treatment device can be transported to other destinations according to user needs and quickly put into the treatment work of landfill leachate, which reduces the construction time of new treatment devices, improves the secondary utilization rate of old treatment devices, and reduces the treatment cost of landfill leachate, achieving the effect of killing two birds with one stone. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure in which the first box body, the second box body and the third box body are stacked and installed.

[0020] Figure 2 It is a structural schematic diagram of the utility model.

[0021] Figure 3It is a structural diagram of embodiment 2.

[0022] Figure 4 This is a schematic diagram of the structure of the third embodiment.

[0023] Figure 5 A schematic diagram of the structure of the aeration component.

[0024] Figure 6 Schematic diagram of the structure of the second nozzle. DETAILED DESCRIPTION

[0025] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0026] Embodiment 1, refer to Figure 1 and Figure 2 , an assembled landfill leachate treatment device, comprising at least one movable first box 41, at least one movable second box 42 arranged on one side of the first box 41, at least one movable third box 43 arranged on one side of the second box 42, at least one regulating tank 13 arranged in the first box 41, at least one grille well 12 arranged in the first box 41 and connected to the regulating tank 13, at least one anaerobic tank 14 arranged in the second box 42, at least one aerobic tank 15 arranged in the second box 42 and connected to the anaerobic tank 14, at least one MBR membrane biological reactor 21 arranged in the third box 43, at least one fan device 32 for providing air, at least one first infusion pump 16 arranged in the regulating tank 13 in the first box 41, at least one detection tank 30 arranged in the third box 43, at least one acid washing device 19 arranged in the third box 43, at least one air filter 32 arranged in the second box 43, at least one air filter 32 ... 2, a mixed liquid reflux pump 18 located in the aerobic tank 15, at least one submersible flow propeller 17 arranged in the anaerobic tank 14, at least one second infusion pump for conveying the landfill leachate of the anaerobic tank 14 to the aerobic tank 15, at least one third infusion pump for conveying the landfill leachate of the anaerobic tank 14 to the MBR membrane biological reactor 21, two first infusion pipes 44 respectively arranged at both ends of the first infusion pump 16, two second infusion pipes 45 respectively arranged at both ends of the second infusion pump, two third infusion pipes 46 respectively arranged at both ends of the third infusion pump, at least one sludge pipe 22 and at least one sludge pipe 50 matched with the sludge pipe 22, the first infusion pump 16, the second infusion pump and the third infusion pump can all be lift pumps, the first infusion pump 16 adopts liquid level control, and liquid level switches can be arranged on the first infusion pipe 44, the second infusion pipe 45 and the third infusion pipe 46 to perform liquid level control.

[0027] Reference Figure 1 The third box body 43 is detachably stacked on the upper side of the second box body 42 , and the second box body 42 is detachably stacked on the first box body 41 .

[0028] Reference Figure 2 The first infusion tube 44 is used to connect the regulating tank 13 and the anaerobic tank 14. The first infusion tube 44 is used to connect one end of the first infusion pump 16 to the liquid outlet of the regulating tank 13. The first infusion tube 44 is used to connect the other end of the first infusion pump 16 to the liquid inlet of the anaerobic tank 14. The second infusion tube 45 is used to connect one end of the second infusion pump to the liquid outlet of the anaerobic tank 14. The second infusion tube 45 is used to connect the other end of the second infusion pump to the liquid inlet of the aerobic tank 15. The third infusion tube 46 is used to connect One end of the third infusion pump is connected to the liquid outlet of the aerobic tank 15, and the other end of the third infusion pump is connected to the liquid inlet of the MBR membrane biological reactor tank 21 using the third infusion pipe 46. The inlet of the sludge pipe 22 is connected to the sludge outlet of the MBR membrane biological reactor tank 21 using the sludge pipe 50, and the outlet of the sludge pipe 22 is connected to the inlet of the anaerobic tank 14 using the sludge pipe 50, so that the anaerobic tank 14 is connected to the aerobic tank 15, and the aerobic tank 15 is connected to the MBR membrane biological reactor tank 21.

[0029] Reference Figure 2 The grid well 12 is used to filter the landfill leachate, and the landfill leachate enters the regulating tank 13 from the liquid inlet end of the grid well 12. The regulating tank 13 is used to adjust the water quality and quantity of the landfill leachate. The anaerobic tank 14 is used to perform anaerobically treatment on the landfill leachate. The aerobic tank 15 is used to perform aerobic treatment on the landfill leachate. The MBR membrane biological reactor 21 is used for mixed water separation treatment.

[0030] Reference Figure 2 The fan device 32 provides air to the regulating tank 13, the aerobic tank 15 and the MBR membrane biological reactor tank 21 respectively. The grille well, the regulating tank 13, the anaerobic tank 14, the aerobic tank 15 and the MBR membrane biological reactor tank 21 are connected in sequence. The first box body 41, the second box body 42 and the third box body 43 are connected as a whole in a stacked manner.

[0031] Reference Figure 2 The fan device 32 includes at least one first fan 23 for providing air, at least one first air duct 47 arranged on the first fan 23, at least one second air duct 48 arranged on the first fan 23, at least one second fan 20 arranged in the third box 43 for providing air, and at least one third air duct 49 arranged on the second fan 20.

[0032] Reference Figure 2The first air duct 47 extends below the liquid level of the regulating tank 13, so that the first fan 23 passes air into the regulating tank 13 for aeration. The second air duct 48 extends below the liquid level of the aerobic tank 15, so that the first fan 23 passes air into the aerobic tank 15 for aeration. The third air duct 49 is connected to the air inlet end of the MBR membrane biological reactor tank 21, and the second fan 20 passes air into the MBR membrane biological reactor tank 21 for aeration, so that the landfill leachate is separated through the MBR membrane biological reactor tank 21 to obtain filtered water.

[0033] Reference Figure 2 , N of the first fan 23 is 2.2KW, N of the second fan 20 is 1.5KW, the first fan 23 and the second fan 20 are Roots blowers, the models of the Roots blowers are SSR65 and SSR50, and the Roots blowers adopt time control.

[0034] Reference Figure 2 The liquid inlet of the detection tank 30 is connected to the liquid outlet of the MBR membrane biological reaction tank 21, and the liquid outlet of the detection tank 30 is connected to the municipal pipe network. The filtered water in the detection tank 30 can be discharged into the municipal pipe network after being tested and meeting the standards.

[0035] Reference Figure 2 The pickling device 19 performs pickling on the liquid in the MBR membrane biological reactor tank 21 to adjust the pH value of the liquid in the MBR membrane biological reactor tank 21 .

[0036] Reference Figure 2 The mixed liquid reflux pump 18 refluxes the liquid in the aerobic tank 15 to the regulating tank 13 .

[0037] Reference Figure 2 By setting a mixed liquid reflux pump 18 to transport the landfill leachate 11 at the liquid outlet of the aerobic device 15 to the regulating device 13, on the one hand, the landfill leachate 11 is refluxed into the regulating device 13 to achieve secondary and repeated landfill leachate 11 treatment, reducing the number of equipment of the anaerobic device 14 and the aerobic device 15, thereby further reducing the pollutants in the landfill leachate 11 and improving the treatment effect of the landfill leachate 11. On the other hand, the equipment purchase cost of the anaerobic device 14 and the aerobic device 15 is reduced, achieving the effect of killing two birds with one stone.

[0038] Reference Figure 2In this embodiment, the specific regulating tank 13 includes a regulating tank body and a stirrer disposed in the regulating tank 13. The stirrer stirs the landfill leachate in the regulating tank 13. The first air duct 47 extends below the stirrer and can be located at the bottom of the regulating tank 13. The regulating tank 13 is model BA-STJT10, the device material is carbon steel anti-corrosion, the stirrer material is PVC perforation, and the stirrer is provided to prevent sludge from depositing in the regulating tank 13. The stirrer model can be MA10 / 12-620-480. When the water quality of the landfill leachate is unstable, a nutrient or a water quality pH regulator is added.

[0039] In this embodiment, the specific anaerobic tank 14 includes an anaerobic tank body, an anaerobic water inlet pump, an anaerobic circulation pump, a double-layer membrane gas cabinet, a biogas booster fan, an anaerobic sludge pump, an anaerobic sedimentation tank sludge pump, at least one anaerobic sludge disposed in the anaerobic tank 14, and two submersible flow propelling devices 17 disposed in the anaerobic tank 14 at intervals. The submersible flow propelling devices 17 are time-controlled. The model of the anaerobic tank 14 is BA-SLY30, and the device material is carbon steel for corrosion resistance. The N of the submersible flow propelling device 17 is 0.75KW. Through the action of the anaerobic tank 14, the landfill leachate is subjected to anaerobic digestion, and the insoluble macromolecular pollutants in the water are hydrolyzed and decomposed into small molecular organic acids and inorganic substances, etc., to reduce the wastewater concentration and improve the biodegradability of the landfill leachate.

[0040] Reference Figure 2 In this embodiment, the specific aerobic tank 15 includes an aerobic tank body, a membrane aeration disk arranged in the aerobic tank 15 and two mixed liquid reflux pumps 18, and the N of the mixed liquid reflux pump 18 is 0.75KW. The model of the aerobic tank 15 is BA-SLH30, the reflux ratio is 300%, and the device material is carbon steel anti-corrosion.

[0041] Reference Figure 2In this embodiment, the specific MBR membrane biological reactor 21 includes a reactor body, a membrane assembly arranged in the reactor body for filtering landfill leachate, a liquid inlet pipe arranged on the membrane assembly, a liquid outlet pipe arranged on the membrane assembly and connected to the detection tank 30, and an air inlet pipe arranged on the membrane assembly. The air inlet pipe is connected to the third air duct, and a hollow fiber ultrafiltration membrane can be used. The second fan 20 provides air, an aeration part arranged on the membrane assembly, and two sludge return pumps connected to the membrane assembly. The membrane assembly further removes organic matter, ammonia nitrogen and suspended solids in the landfill leachate. The sludge treated by the membrane module can be returned to the anaerobic tank 14 for secondary treatment or discharged into the septic tank of the garbage leachate. The model is BA-SMO10. The MBR biofilm reaction tank adopts an integrated tubular membrane system with a double loop, a circulation pump, a cleaning pump, a chemical pump, and a liquid level tank. The device is made of carbon steel for corrosion resistance. The treatment efficiency of the MBR biofilm reactor is greatly improved, the tank capacity is reduced, the main pollutants COD, BOD and ammonia nitrogen are effectively degraded, and the effluent quality is good.

[0042] Reference Figure 1 By arranging the first box body 41, the second box body 42 and the third box body 43 to be connected together in a stacked manner, on the one hand, the footprint of the treatment device is effectively reduced and the space above the ground is effectively utilized. On the other hand, the user can choose to stack and install another first box body 41, another second box body 42 or another third box body 43 directly on the upper side of the first box body 41, the second box body 42 or the third box body 43 according to the required treatment amount of the landfill leachate, thereby increasing the number of devices and achieving the effect of increasing the processing capacity of the equipment. While increasing the processing capacity of the treatment device, the footprint of the treatment device is reduced, achieving the effect of killing two birds with one stone.

[0043] Reference Figure 2 By arranging the regulating tank 13, the anaerobic tank 14, the aerobic tank 15 and the MBR membrane biological reactor 21 in the first box body 41, the second box body 42 and the third box body 43 respectively, the transportation and movement of the equipment is convenient, so that after completing the treatment work, the treatment device can be transported to other destinations according to user needs and quickly put into the treatment work of the landfill leachate, which reduces the construction time of the new treatment device, improves the secondary utilization rate of the old treatment device, and reduces the treatment cost of the landfill leachate, achieving the effect of killing two birds with one stone.

[0044] Example 2, refer to Figure 3The difference between the second embodiment and the first embodiment is that: a second box 42 is arranged on the upper side of a first box 41, a third box 43 is arranged on the left or right side of the first box 41, and another second box 42 is arranged on the upper side of the third box 43. The first box 41, the second box 42 and the third box 43 are all connected by a liquid infusion pipeline, and the liquid infusion pipeline includes a first liquid infusion tube 44, a second liquid infusion tube 45 and a third liquid infusion tube 46. The other structures are similar to those of the first embodiment and will not be repeated here.

[0045] Example 3, refer to Figure 4 and Figure 5 The difference between the third embodiment and the first embodiment is that the landfill leachate treatment device also includes at least one movable container body, at least one aerobic tank 15 arranged in the container body, and at least one aerator 710 for aerating the liquid in the aerobic tank 15.

[0046] Reference Figure 4 and Figure 5 By arranging the aerobic tank 15 and the aerator 710 in the container body, on the one hand, the container body is easy to move, and the user can move the container body to the designated target area to treat the pollutants as needed, effectively improving the utilization rate of the aerobic tank 15 and the aerator 710, thereby reducing the secondary purchase cost of the aerobic tank 15 and the aerator 710, and reducing the construction time of the aerobic tank 15 and the aerator 710, reducing the project cost. On the other hand, after the use of the aerobic tank 15, the container body can be directly moved to other locations, reducing the footprint of the treatment device and improving the utilization rate of the treatment device, achieving the effect of killing two birds with one stone.

[0047] Reference Figure 4 and Figure 5 The aerator 710 includes an aeration assembly 711, a fan 712, and a circulating water pump 713 that can be disposed in the liquid.

[0048] Reference Figure 4 and Figure 5The aeration assembly 711 includes a first shell 730, a plurality of first nozzles 719 spaced apart around the outer circumference of the first shell 730, at least one liquid inlet 722 disposed on the bottom of the first shell 730, a first cavity 721 disposed in the first shell 730 so that the liquid inlet 722 is connected to the first nozzle 719, a second shell 716 wrapped around the outer side of the first shell 730, a plurality of second nozzles 718 spaced apart around the outer circumference of the second shell 716, an air inlet 714 disposed on the upper part of the second shell 716, a second cavity 715 disposed in the second shell 716 so that the air inlet 714 is connected to the second nozzle 718, a bottom plate 720, and a plurality of hollow branch pipes 717 disposed on the second shell 716.

[0049] Reference Figure 4 and Figure 5 The circulating water pump 713 sprays liquid into the first nozzle 719 through the liquid inlet 722 , and the fan 712 sprays air into the second nozzle 718 through the air inlet 714 . The liquid and air are mixed and then sprayed out through the second nozzle 718 .

[0050] Reference Figure 4 and Figure 5 , a circulating water pump 713 is provided to spray liquid into the first nozzle 719 through the liquid inlet 722, and a fan 712 is provided to spray air into the second nozzle 718 through the air inlet 714. The liquid and the air are mixed and then sprayed out through the second nozzle 718. On the one hand, the liquid is collected in the first cavity 721 and then sprayed toward the second nozzle 718 through the first nozzle 719, so that the liquid and the air collide and mix in the second nozzle 718 and then sprayed out from the outlet end of the second nozzle 718, thereby improving the aeration efficiency and the oxygen content. On the other hand, the liquid sprayed out from the second nozzle 718 can also disturb other liquids to form forced convection, thereby playing the effect of stirring the liquid, achieving the effect of killing two birds with one stone.

[0051] Reference Figure 5 The outlet end 724 of the first nozzle 719 extends into the inlet end 725 of the second nozzle 718 , and the diameter of the inlet end 725 of the second nozzle 718 is larger than the diameter of the outlet end 724 of the first nozzle 719 , so that air and liquid are mixed in the second nozzle 718 .

[0052] Reference Figure 5 By setting the outlet end of the first nozzle 719 to extend into the inlet end of the second nozzle 718, the diameter of the inlet end of the second nozzle 718 is larger than the diameter of the outlet end of the first nozzle 719, so that the air and the liquid are mixed in the second nozzle 718, thereby improving the mixing effect of the air and the liquid.

[0053] Reference Figure 5The first nozzle 719 has a conical shape, and the diameter of the inlet end 723 of the first nozzle 719 is larger than the diameter of the outlet end 724 of the first nozzle 719 . The second nozzle 718 has a conical shape, and the diameter of the inlet end 725 of the second nozzle 718 is larger than the diameter of the outlet end 724 of the second nozzle 718 .

[0054] Reference Figure 5 and Figure 6 The air inlet 714 and the liquid inlet 722 are arranged relatively spaced apart, a plurality of first nozzles 719 are arranged in a circular array with the liquid inlet 722 as the center, and a plurality of second nozzles 718 are arranged in a circular array with the air inlet 714 as the center.

[0055] Reference Figure 5 and Figure 6 By arranging a plurality of first nozzles 719 in a circular array with the liquid inlet 722 as the center, and a plurality of second nozzles 718 in a circular array with the air inlet 714 as the center, the aeration area is evenly distributed.

[0056] Reference Figure 5 The bottom plate 720 is respectively covered on the bottom of the first shell 730 and the bottom of the second shell 716 , so that the bottom of the first shell 730 and the bottom of the second shell 716 are connected as a whole through the bottom plate 720 .

[0057] Reference Figure 5 One end of the branch pipe 717 is disposed on the second shell 716 and communicates with the second cavity 715 , and the other end of the branch pipe 717 is communicated with the interior of the second nozzle 718 . The branch pipe 717 is L-shaped in appearance.

[0058] Reference Figure 5 By setting the branch pipe 717, the amount of air entering the second nozzle 718 per unit time is increased, thereby increasing the oxygen content when the liquid and air are mixed.

[0059] Reference Figure 5 By setting the branch pipe 717 to be L-shaped, the L-shaped shape can serve as a handle, making it easier for the user to grasp when carrying the aeration assembly 711.

[0060] Reference Figure 4 In this embodiment, the whole system is mainly composed of a jet aeration assembly 711, a circulating water pump 713 and a fan 712. The aeration assembly 711 mixes the liquid pumped by the circulating water pump 713 evenly with the air pumped by the second cavity 715 through the first nozzle 719 to the second nozzle 718, and then ejects it horizontally through the second nozzle 718 in the form of a jet flow. In order to achieve the effect of uniform supply and mixing of circulating water and air and improve the efficiency of the aerator, the first cavity 721 is separated from the second cavity 715, and each first nozzle 719 is separately connected with each group of second nozzles 718.

[0061] The features of the aerator in this embodiment are:

[0062] 1. High oxygen transfer efficiency.

[0063] 2. Except for the submersible circulating water pump, there are no operating accessories in the water.

[0064] 3. Suitable for changing water level

[0065] 4. Low power consumption.

[0066] 5. The oxygen transmission and stirring can be controlled separately.

[0067] 6. Used in deep aeration and high MLSS occasions, the reaction tank volume required is smaller than other aeration systems, saving space.

[0068] 7. Corrosion-resistant accessories.

[0069] 8. The system is simple, so the installation cost is low.

[0070] 9. A self-cleaning backwashing system can be used to overcome the problem of stopping the machine and draining the tank water when blocked by foreign matter.

[0071] 10. The submerged design can prevent heat loss, eliminate the worry of freezing, and maintain biological activity in all seasons.

[0072] The other structures are similar to those of the first embodiment and will not be described in detail here.

[0073] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. An assembled landfill leachate treatment device, characterized in that: The invention comprises at least one movable first box, at least one movable second box arranged on one side of the first box, at least one movable third box arranged on one side of the second box, at least one regulating tank arranged in the first box for regulating water quality and quantity, at least one grille well arranged in the first box and connected with the regulating tank for pre-filtration, at least one anaerobic tank arranged in the second box for anaerobic treatment, at least one aerobic tank arranged in the second box and connected with the anaerobic tank for aerobic treatment, at least one MBR membrane biological reactor tank arranged in the third box for mixed water separation treatment, and at least one fan device for providing air, wherein the fan device provides air to the regulating tank, the aerobic tank and the MBR membrane biological reactor tank respectively, the grille well, the regulating tank, the anaerobic tank, the aerobic tank and the MBR membrane biological reactor tank are connected in sequence, and the first box, the second box and the third box are connected into one by stacking.

2. The assembled landfill leachate treatment device according to claim 1, characterized in that: The first box, the second box and the third box are connected as a whole in a stacked manner. The third box is detachably stacked on the upper side of the second box, and the second box is detachably stacked on the first box.

3. The assembled landfill leachate treatment device according to claim 1, characterized in that: One of the second boxes is arranged on the upper side of one of the first boxes, one of the third boxes is arranged on the left or right side of the first box, and another of the second boxes is arranged on the upper side of the third box. The first box, the second box and the third box are all connected by an infusion pipeline.

4. The assembled landfill leachate treatment device according to claim 1, characterized in that: It also includes at least one first infusion pump arranged in the first box and located in the regulating tank, and a first infusion tube for connecting the regulating tank and the anaerobic tank, wherein the liquid inlet end of the first infusion pump is connected to the liquid outlet end of the regulating tank through the first infusion tube, and the liquid outlet end of the first infusion pump is connected to the liquid inlet end of the anaerobic tank through the first infusion tube.

5. The assembled landfill leachate treatment device according to claim 1, characterized in that: The fan device includes at least one first fan for providing air, at least one first air duct arranged on the first fan, and at least one second air duct arranged on the first fan, the first air duct extends below the liquid level of the regulating tank, so that the first fan draws air into the regulating tank for aeration, and the second air duct extends below the liquid level of the aerobic tank, so that the first fan draws air into the aerobic tank for aeration.

6. The assembled landfill leachate treatment device according to claim 1, characterized in that: The fan device also includes at least one second fan arranged in the third box for providing air and at least one third air duct arranged on the second fan, and the third air duct is connected to the air inlet end of the MBR membrane biological reactor tank.

7. The assembled landfill leachate treatment device according to claim 1, characterized in that: It also includes a detection tank arranged in the third box body, the liquid inlet end of the detection tank is connected to the liquid outlet end of the MBR membrane biological reactor tank, and the liquid outlet end of the detection tank is connected to the municipal pipe network.

8. The assembled landfill leachate treatment device according to claim 1, characterized in that: It also includes at least one acid washing device arranged in the third box, and the acid washing device performs acid washing on the liquid in the MBR membrane biological reactor tank.

9. The assembled landfill leachate treatment device according to claim 1, characterized in that: It also includes at least one mixed liquid reflux pump disposed in the second housing, and the mixed liquid reflux pump refluxes the liquid in the aerobic tank to the regulating tank.

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